Gas-making apparatus.



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GAS MAKING APPARATUS.`

(Appliqation med oct. 5, 1899A 2 Sheefs-Sheet I.

(lo Model.)

'um 662,920. A Patented nec. 4, |9oo.

R. M. DIXON. GAS MAKING APPARATUS.

(Application sied ont. s, 1899.)

(lo Nudel.) 2 Sheets--Sheet 2'.

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NITED STATES ROBERT MUNN DIXON, OF EAST ORANGE, NEW JERSEY.4

GAS-MAKiNG APPARATUS.

SPECIFICATION formngpart of Letters vPatent No. 662,920, dated December4., 1900.

Application filed October 5, 1899. Serial No. 732,617. (No model.)

T0 @ZZ whom, it may concern:

Be it known that I, ROBERT MUNN DIXON, of East Orange, in the county ofEssex, State of New Jersey, have invented certain ne7 and usefulImprovements in Gas-Making Apparatus, of which the following isacomplere specification, reference being had to the accompanyingdrawings. The object of my invention is to produce improvements inapparatus for the manufac- .ire of gas whereby the necessity of passingthe gas through water is obviated. By the method of manufacture ingeneral use the gas from the retort, loaded with vapors of tar and otherimpurities, is repeatedly passed through water, by which the gas iscleansed of the tar and other impurities. The mixture of the water withthe tar from the oil is destructive to the value of the tar, because itis practically impossible to separate the tar from the water, and thepresence of Water in the tar destroys the value of the latter for 'fuelor for any chemical purpose.

In the accompanying drawings, Figure I is i a diagrammaticalviewexemplifying apractical form of apparatus for the manufacture of gas.Fig. II is a sectional view of a set of retorts and furnace,illustrating the liquid seal through which the gas from the lower retortis delivered to the main pipe that leads to the holder. Fig. III is afront elevation, half in section, of the liquid seal shown in Fig. Il,detached.

Referring to the numerals on the drawings, 1 indicates the upper retort,2 the lower retort, and 3 the fire-pot, of one of a plurality offurnaces with which a plant is usually provided. vrlhe furnace is shownas provided with a pipe which, communicating at one end with a source ofoil-supply, (not illustrated,) furnishes oil to the upper retort 1. Thegas generated in the upper retort 1 is passed through the lower andhotter retort 2, where it is iiXed andwhenceit issues, as through a pipe5 and liquid seal 6, to the main pipe 7, which in its course is providedwith a tar-box 8, a safety-valve 9, ashut-o valve 10, a condenser 11, awasher 12, and finally purifiers 13 and 14. .Leaving the puriiiers themain pipe 7 passes through a meter 15 and thence to a gas-holder. (Notillustrated.) A tarpot 16, communicating with the tar-box 8, receivestherefrom the rst deposit of tar. A tar-pot 17 also communicates withthe condenser 11, a tar-pot 18 drains the washer 12, and a tar-pot 19drains the purifiers 13 and 14 and those portions of the main pipeconnected therewith. All of the tar-pots, as through respective branchpipes 20, 21, 22, and 23, discharge, as througha common dis` charge-pipe24, into a tar-well 25.

26, 27, 28, 29, 30, 31, and 32 indicate pipes which lead from thevarious .parts of the apparatus to a diiferential gage, not necessary inthis connection to illustrate.

Ordinarily the liquid seal 6 and the Washer 12 are lled to requiredextent with Water through which the gas is compelled to pass and inpassing through which it is cleansed of impurities. It is to dispensewith the use of water for performing this function that my invention ismade. To accomplish that end I substitute for the Water ordinarilyemployed tar.

Usually the member 6 is termed the water seal and the member 12 thewasher; but since the gas is compelled in its passage through eachmember to pass through a volume of liquid I prefer to class both members6 and 12 under the general term f watersealing devices, in order toconveniently and generically designate them in the claims appended.

The tar is preferably obtained through a suction-pipe 33, communicatingat one end with the tar-well, which constitutes acontinuously-replenished source of supply, and at its other end with apump 34, which supplies the tar from the suction-pipe 33 to a commondeliverypipe 35. The deliverypipe communicates at required intervals, asthrough valve-controlled branch pipes 36 and 37, with those parts of theapparatus which require the presence of the liquid'which the pipe 35 isdesigned to supply.V The pipe 36, for example, is adapted to supply tar,as required, to the interior of the washer 12 and the pipe 37 to theinterior of the seal. The amount of liquid supplied through the severalbranch pipes may be regulated, as by the valves in those pipes orotherwise, as preferred. r

IOO

Since the contents of the tar-Well 25 is liable to become lat timesoverheated and since it is necessary that it should be utilized for thepurposes hereinbefore specified in a comparatively cool state, meansshould be provided for .cooling it before it is supplied to thesuction-pipe 33. For this purpose I prefer to provide in the bottom ofthe Well 25 a coolingcoil 38, which, communicating as through a pipe 39with the Water of the gas-holder (not illustrated) at a high level,communicates through its terminal 40 with the Water of the gas-holder ata lower level. By this means circulation by gravity through the coil 38may be effected. Of course the coil may be supplied with Water directlyfrom a main or other source of supply or other. means of cooling theWell 25 may be employed,if preferred.

The operation of the apparatus being briefly but comprehensivelyoutlined in the foregoing description addressed to one skilled in theart, it is thought to afford a sufcient explanation of the operation ofthis apparatus Without more detailed specification in that regard.

What I claim isl t.

l. In an apparatus for the manufacture of gas, the combination with theliquid-sealing portions thereof, of a receptacle for the tar generatedby the apparatus, and means for producing circulation of the tar fromsaid receptacle to the sealing portions ofthe apparatus, and back tothetar-receptacle, substantially as set forth.

2. In apparatus for the manufacture of gas, provided with liquid-sealing portions, the combination with its tar-Well, adapted toreceive-tar generated by the apparatus, of a suction-pipe, pump andtar-delivery pipe, operatively connected With the sealing portions, anda cooling-coil adapted to reduce the tem*- perature of the tar so as torender it available for use in the sealing portions, While the apparatusis in operation, substantially as set forth.

In testimony of all which I have hereunto A. C. MooRE, MARTIN J. MORGAN.

